Coke tree preventing guard for boilers and furnaces



Filed Feb. 10, 1948 BOILERS AND FURNACES 2 Sheets-Sheet 1 A INVENTOR. 5627220 1% 57-650 z' Sept. 20, 1949. s. IMBRESCI COKE TREE PR TING GUARD FOR BOILERS FURNACES -2' Sheets-Sheet 2 Filed Feb. 10, 1948 O Q 0 20 91 l v I N VEN TOR.

am zafm 57-650 z' Patented Sept. 20,194?) invent on relates t im rovement-51in coke' s' P v n in object of the; invention is [to provide an improved fire guard for positioning upon the bed in any stoker' firedboiler or prevent the" building trees in the boiler or top of the fire furnace to automatically up or formation of coke furnace. r v 7 Another object ofthe invention is to provide an improved form, o'ffire guard which will be supportedupon the" fire bed in any stoker fired boiler or furnace to prevent thrq building up or formation of coketrees inth'boiler or furnace, and: said: guard havingl means associatedtherewith whereby the same may be' raised when clinkers are, being reinovedfrom;the-boiler or furnace.

A further object of the inventionis to provide animprovedcoke' treepreventing guard for boilers and furnaces which will be highlyfeffioient in: operation and relatively inexpensive to manu: factureand='pr oduce-.- 1

Other objects will appear as thedescription proceeds. V

In the accompanying drawings, which form a part of this application,

Figure 1' is a side elevation of a boiler or furnace and stoker therefor, with parts of the boiler or furnace'being brokenaway and in section to show the coke tree preventing guard in operative position therein; v

Figure 2 is a side elevation of a stoker fed boiler or furnace with parts thereof being broken away and in section to show the coke tree preventing guard being partially raised by means of the lifting bar;

Figure 3 is a view similar to that shown in Figure 2, but withthe coke tree preventing guard supported in raised position and a poker in position to remove a clinker;

Figure 4 is an enlarged plan view of the improved coke tree preventing guard;

Figure 5 is a side elevation of the improved coke tree preventing guard with a portion thereof being broken away and in section, and

Figure 6 is a perspective view of the fulcrum supported pivoted guard plate lifting bar.

Like characters of reference are used throughout the following specification and the accompanying drawings parts. 7

In carrying out the invention, there is shown a typical boiler or furnace generally designated by the reference numeral l, the same having a fire box 2 in the bottom thereof lined with fire guards for boilers" andfurnaces;

to designate corresponding rest upon the upper v1.1; r i

con ains]; ,mrvmmaeemdmai noltunslmn antorl lrnblesci, Chicago;

" sate n t rnary 10, 1914s, st ains; wiser i reclaims; (01116-545) brick '3. A' grate the fire box 2, and a retort and" centrally thereof. A fire for the boiler orfurnace I. e

As seen from the. drawings, both the, fire brick 3" and grate 4 upon are supported extending annular flange 1* with the boiler or furnace l.

K stoker including a hopper 8, feed tube 9', worm'lll, and motor H for rotating the worm I0 is, provided and the feed tube 91 connects with theretort 5 in the usual manner.

'The" cake tree prises a cast plate l2 possessing weight, being foirli'ed of any a shape to' fit within eitheraj round or rectangular boiler or furnace, resting upon the fire bed l3"within the firebox 2'. The guard plate I2 is slightly bowed upwardly in cross section, and hasa'plurality of openings or apertures l'4iformed" to. permit air to also to let the gases of combustionwith the'smoke and flame to pass upwardly therethrough.

One end of the guard plate I2 is provided with the spaced legs 15 which connect with and support the end bar l6 whose terminal ends are reduced as at l1 for receiving the loops l8 on the offset supporting legs l9 which are adapted to surface of the fire bed 13. The'opposite end of the guard plate I2 is formed with the end bar 20 extending in parallel relation to the end bar l6, and has one end reduced as at 2| for rotatably supporting the loop 22 on the end of the brace rod end of the rod 23 is hooked as at 24 to better support the guard plate 12 when in elevated position. A cotter key 25 extends through the outer end 2| of the end bar 20 for retaining the looped end 22 of the brace rod '23 in position.

An integrally formed socket 28 is disposed on the upper surface of the guard plate l2 adjacent the end bar 20,- and is adapted to receive the flattened end 21 of the guard plate lifting bar 28 when inserted into the boiler or furnace l through the opened fire door 6. The outer end of the bar 28 is looped as at 29 to provide a handle portion for grasping when using the lifting bar 28. An inverted T-shape fulcrum support 30 is provided, and is formed with the spaced bearing ears 3| between which the pivot pin 32 is supported, said pin 32 also passing through the bar 28'at a point nearer its inner end than to its outer end. I

In operation, the guard plate i2 is disposed 2 4 is provided at thebotto'm of 5' is. supported below door 6 is provided,

the inwardly formed integrally preventing guard, which forms the subject matterof theinstant invention com-' desired fire resistant metal and of pass therethrough for complete combustion over the fire; bed jl3, and:

23. The opposite or free 7 upon the upper surface of the fire bed [3, and 3. A coke tree preventing guard for boilers and as the coal is fed upwardly through the fire bed furnaces comprising an apertured arcuate plate door 6 is opened, and the bar 28 is inserted into 10 offset supporting legs pivotally mounted on the the looped handle 29 of the bar 28 is moved down 5. coke'tree preventing guard for boilers and within the furnace or boiler I to remove the terminal bearing ends, offset supporting legs pivclinkervor clinkers. The bar 28 is then manlp otally mounted on said terminal bearing ends, a lated until the brace rod :3 again assumes a sublifting socket formed on the opposite end of said stantlally h r n a p s i n and tn uard pla plate adjacent the other bar, Said other bar hav- 2 once more rests upon the fire bed l3 mg a terminal bearing end and a hooked bracing While the preferredembodimen't of the, instant rod pivotally mounted on the last named terminal to Without departure from the spirit of the 3Q lifting soeket for lifting one end of said plate.

Having thus described my invention; what I i I I claim as new and desire to secure by LettersPat- REFERENCES CITED ent of the United States is: e i The following references: areof record-in the 1 1. A coke tree prevent ng guardfor boilers and me of this patent: I

end bars at its opposite ends, and supporting legs UNITED STATES N S l V mounted on the ends of one of said end bars. Number Name 7 2 Date 1 2. A coke tree'preventing guard for boilers and, p 79,390 Rand June 30,1868 nac comprising an apertured arcuate plate 946,701 Mooney Jan 18,1910 having end bars at the opposite ends thereof, sup- 1,825,432- Wamr Sept; 29' 19312 Porting legs pivotally mounted on the nd 2,262,324 Hofiman Nov. 11; 1941 

